I leave after awful din, a kind of blue (6)
I believe the answer is:
indigo
'a kind of blue' is the definition.
'indigo' can be an answer for 'blue' (I've seen this in another clue). I'm not sure about the 'a kind of' bit.
'i leave after awful din' is the wordplay.
'leave' becomes 'go' ().
'after' means one lot of letters go next to another.
'awful' is an anagram indicator.
'din' with letters rearranged gives 'ndi'.
'go' after 'ndi' is 'ndigo'.
'i'+'ndigo'='INDIGO'
Can you help me to learn more?
(Other definitions for indigo that I've seen before include "Spectral colour" , "supplier of blue stuff" , "product of woad" , "One of the colours of the rainbow" , "Deep dark blue" .)